Landfills: Problems, Solutions and Decision-making of Waste Disposal in Harare (Zimbabwe)

Type Journal Article - Biosciences, Biotechnology Research Asia
Title Landfills: Problems, Solutions and Decision-making of Waste Disposal in Harare (Zimbabwe)
Author(s)
Volume 13
Issue 1
Publication (Day/Month/Year) 2016
Page numbers 307-318
URL http://biotech-asia.org/pdf/vol13no1/bbra_volume13_Issu01_p_307-318.pdf
Abstract
Selection of a suitable site for constructing a new landfill is one of the most
challenging issues for town planners in developing countries. A study was conducted to
locate the most suitable site for constructing a sanitary landfill in the city of Harare using
Geospatial techniques and Multi-Criteria Evaluation. To identify appropriate landfill
sites, nine input map layers including proximity to settlements/built up area, proximity
to protected areas, proximity to airports, proximity to road and railway networks, surface
water, slope, elevation and soil type were used for mapping, analysis and evaluation.
Each criterion was identified and weighted using Analytic Hierarchy Process. A final
map was generated which identified potential areas for the location of a landfill site.
Results revealed that 1.31% of the total area of Harare was identified as mostly suitable,
24.73% as moderately suitable to suitable and 76.96% as unsuitable to construct a sanitary
landfill. Six sites were identified as most suitable sites for a landfill. These selected sites
require further geotechnical and hydrogeological analyses to identify the final site in the
city to construct a sanitary landfill.

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